Izal may refer to: Izal or Iaal, a village in Lebanon Izal or Itzalle, a municipality in the Salazar Valley, Spain Izal, a disinfectant and range of products made by Newton, Chambers & Co.
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80a717f141422f2042d7e55082988a859c23d36965a74a07fe05dca1458c977e. Chain 2 (Bitcoin): anchored in block 954705 (2026-06-21T13:42:37Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f13ccf48-581f-4271-8684-6ab2acc15ea5.json and https://artists.proofprofile.net/proofs/artist/f13ccf48-581f-4271-8684-6ab2acc15ea5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).